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Luminescence properties of (Y, Zn)₂O₃: Eu³+ red phosphor as the effect of Zn ion

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2008, 18(6), pp.253-257
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

송영현 1,  문지욱 1,  박우정 1,  YOON, DAEHO 1

1성균관대학교

Accredited

ABSTRACT

To enhance the luminescence properties, the red phosphor composed of (Y, Zn)₂O₃ : Eu³+ as doping concentration of Zn ion is synthesized at 1200℃ for 6 hrs in air atmosphere by conventional solid reaction method. As a result of the red phosphor (Y, Zn)₂O₃ : Eu³+ is measured X-ray diffraction (XRD), The main peak is nearly corresponded to the same as JCPDS card (No. 41-1105). When the doping concentration of Zn ion is more than 5 mol%, However, the ZnO peak is showed by XRD analysis. Therefore, when the doping concentration of Zn ion is less than 5 mol%, the Zn ion is well mixed in Y₂O₃structure without the impurity phases. The photoluminescence (PL) properties is shown as this phosphor is excited in 254 nmregion and the highest emission spectra of (Y, Zn)₂O₃ : Eu³+ has shown in 612 nm region because of a typical energy transition (5D0→7F2) of Eu³+ ion. As the doping concentration of Zn ion is more than 10 mol%, the emission peak is suddenly decreased. when the highest emission peak as doping concentration of Zn ion is shown, the composition of this phosphor is (Y0.95, Zn0.05)₂O₃ : Eu³+ 0.075 and the particle size analyzed by FE-SEM is confirmed from 0.4 to 3 μm.

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